/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.kyuubi.server.mysql

import io.netty.buffer.ByteBuf

/**
 * The required `MySQLPacket`s are split into 4 groups, which are GENERIC, AUTHENTICATION,
 * COMMAND and DATA.
 * <p>
 * As Kyuubi is designed to be a "MySQL Server", only part of packets need to be encodable
 * and others just need to be decodable.
 */
trait MySQLPacket {
  def sequenceId: Int
}

trait SupportsEncode extends MySQLPacket {
  def encode(payload: ByteBuf): Unit
}

trait SupportsDecode[T <: MySQLPacket] {
  def decode(payload: ByteBuf): T
}
